10kA Short-Circuit Withstand Current Tester | IEC 62196-1 Compliant For EV Testing
Product Overview
Short-Circuit Withstand Current Tester is a dedicated device designed for performing short-circuit withstand current tests on electrical equipment such as EV charging guns, circuit breakers, distribution transformers, ring main units, cable distribution boxes, and connectors. It fully complies with the short-circuit current withstand capability verification test requirements specified in the relevant clauses of IEC 62196-1:2025.
The system features an industrial all-in-one computer for display and parameter setting, a PLC controller for process control, and a data acquisition card for waveform measurement. It delivers a test current of up to 10 kA.
The AC power supply adopts a high-power multi-magnetic-circuit AC power source with an adaptive current control loop. The voltage test mode uses isolated voltage superposition, supporting a maximum test voltage of 1000 V.
The equipment offers user-friendly operation, quick product installation, automatic testing, automatic judgment functions, and high intelligence and reliability.
Technical Features
- Equipped with an industrial all-in-one computer for parameter display and real-time waveform visualization, offering a clear and intuitive interface.
- High-speed data acquisition enables real-time monitoring of current waveforms with microsecond-level (μs) time resolution.
- The current source adopts a multi-magnetic-circuit AC power supply with digital control, delivering high accuracy and excellent stability.
- The voltage uses an isolated design, creating a 1000V potential difference with the equipment housing (ground terminal) while reducing power consumption.
- Supports testing of overload currents at 2.0/2.5/3.0/3.5/4.0/5.0/8.0/10 times the rated current (i.e., 50~10000A).
- Compatible with testing of various device specifications.
- Capable of measuring and recording the relationship between current and time.
- Features comprehensive protection functions including over-voltage and over-current protection, which automatically cut off output and trigger audible-visual alarms when triggered.
- Records real-time test data for easy review and traceability.
Technical Parameters
| Input Parameters |
380V ±10%, 50Hz/60Hz, 100kW |
| Test Voltage Range |
0~1000Vac |
| Voltage Display Resolution |
1V |
| Voltage Display Accuracy |
±1% ±2 lsb |
| Test Current Range |
50~10000A; supports short-circuit current test at 2.0/2.5/3.0/3.5/4.0/5.0/8.0/10 times rated current |
| Open-Circuit Voltage |
≥36V |
| Current Display Resolution |
1A |
| Current Display Accuracy |
±1% ±3 lsb |
| Waveform |
Sine wave |
| Test Station |
1 station (samples provided by the user) |
| Time Setting Range |
0~200mS |
| Time Detection Range |
0~200.0mS |
| Test Time Accuracy |
≤ ±1mS + 0.3%RD (where “RD” refers to the actual working time value) |
| Control Method |
PLC control |
| Test Procedure |
Parameter setting → Preset output → Test output |
| Display Method |
19-inch industrial all-in-one computer |
| Other Functions |
Over-current, over-time and over-temperature protection functions with audible alarms |
| Data Storage Function |
Waveform display and test data saving function |
| Reference Dimensions |
Power Unit: 1800mm (L) × 1000mm (D) × 1800mm (H) Operation Console: 1500mm (L) × 800mm (D) × 1400mm (H) |
Why do EV charging connectors need 10kA high current testing?
During normal EV charging operations, connectors are designed to handle steady-state currents. However, in the event of a short-circuit fault in the vehicle, charging station, or power grid, EV charging connectors may be exposed to extremely high transient currents, often reaching several kiloamperes. A 10kA short-time withstand current test is required to verify that the connector can withstand the thermal and mechanical stress of such a fault without damage, deformation, melting, or safety hazards such as fire or electrical shock.
This test is not only essential to meet the IEC 62196-1:2025 certification requirements for EV connectors, but also to ensure long-term product safety and reliability in real-world applications. Without passing this test, there is a significant risk of connector failure during a fault, which could lead to equipment damage, system shutdown, or even safety incidents. By simulating the worst-case short-circuit conditions, manufacturers can validate the design, materials, and manufacturing quality of their charging guns before they reach the market.
Product Detail
Sinuo Testing Equipment Co., Limited is a professional manufacturer specializing in EV testing equipment, including the SNQC1020A 10kA Short-Circuit Withstand Current Tester. We design and produce this system to fully meet the short-circuit withstand current test needs of charging guns, circuit breakers, connectors, and other electrical components. As the manufacturer, we offer customized solutions for test parameters, fixtures, and automation levels to support your product certification and validation processes.